package pl.devfest.database;

import java.sql.SQLException;

import pl.devfest.model.Task;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.util.Log;

import com.j256.ormlite.android.apptools.OrmLiteSqliteOpenHelper;
import com.j256.ormlite.dao.Dao;
import com.j256.ormlite.support.ConnectionSource;
import com.j256.ormlite.table.TableUtils;

/**
 * Database helper class used to manage the creation and upgrading of your
 * database. This class also usually provides the DAOs used by the other
 * classes.
 */
public class DatabaseHelper extends OrmLiteSqliteOpenHelper {

    // name of the database file for your application -- change to something
    // appropriate for your app
    private static final String DATABASE_NAME = "alleokazja_orm.db";
    // any time you make changes to your database objects, you may have to
    // increase the database version
    private static final int DATABASE_VERSION = 1;

    // the DAO object we use to access the SimpleData table
    private Dao<Task, String> tasksDao = null;

    public DatabaseHelper(Context context) {
	super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    /**
     * This is called when the database is first created. Usually you should
     * call createTable statements here to create the tables that will store
     * your data.
     */
    @Override
    public void onCreate(SQLiteDatabase db, ConnectionSource connectionSource) {
	try {
	    Log.i(DatabaseHelper.class.getName(), "onCreate");
	    TableUtils.createTable(connectionSource, Task.class);
	} catch (SQLException e) {
	    Log.e(DatabaseHelper.class.getName(), "Can't create database", e);
	    throw new RuntimeException(e);
	}
    }

    /**
     * This is called when your application is upgraded and it has a higher
     * version number. This allows you to adjust the various data to match the
     * new version number.
     */
    @Override
    public void onUpgrade(SQLiteDatabase db, ConnectionSource connectionSource,
	    int oldVersion, int newVersion) {
	try {
	    Log.i(DatabaseHelper.class.getName(), "onUpgrade");
	    TableUtils.dropTable(connectionSource, Task.class, true);
	    // after we drop the old databases, we create the new ones
	    onCreate(db, connectionSource);
	} catch (SQLException e) {
	    Log.e(DatabaseHelper.class.getName(), "Can't drop databases", e);
	    throw new RuntimeException(e);
	}
    }

    /**
     * Returns the Database Access Object (DAO) for our SimpleData class. It
     * will create it or just give the cached value.
     */
    public Dao<Task, String> getTasksDao() throws SQLException {
	if (tasksDao == null) {
	    tasksDao = getDao(Task.class);
	}
	return tasksDao;
    }

    /**
     * Close the database connections and clear any cached DAOs.
     */
    @Override
    public void close() {
	super.close();
    }
}
